Bump stalwartlabs/mail-server from v0.10.6 to v0.10.7 (#40)

Bumps stalwartlabs/mail-server from v0.10.6 to v0.10.7.

---
updated-dependencies:
- dependency-name: stalwartlabs/mail-server
  dependency-type: direct:production
...

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Dockerfile

@@ -1,5 +1,5 @@
 # From https://github.com/stalwartlabs/mail-server/blob/main/Dockerfile
-FROM stalwartlabs/mail-server:v0.10.6
+FROM stalwartlabs/mail-server:v0.10.7
 
 COPY --chmod=775 bin/* /usr/local/bin/